S.B. No. 15 introduces new regulations regarding size and density requirements for residential lots in certain municipalities in Texas. The bill establishes a new subchapter in the Local Government Code that defines "housing organization" and "small lot," with the latter being defined as a residential lot of 4,000 square feet or less. The bill applies specifically to municipalities with populations over 150,000 that are located in counties with populations exceeding 300,000. It prohibits municipalities from adopting ordinances that require residential lots to be larger than 3,000 square feet, wider than 30 feet, or deeper than 75 feet, and it restricts density regulations that would prevent single-family homes from being built on lots of at least 3,000 square feet.

Additionally, the bill outlines specific conditions under which municipalities can impose requirements on small lots, such as setbacks and parking regulations, while also allowing for certain exceptions related to environmental features. It clarifies that the new regulations do not affect existing zoning authority or homeowners' association rules. The bill provides a mechanism for individuals adversely affected by violations of this subchapter to seek legal recourse against municipalities, including the possibility of obtaining attorney's fees and court costs. The act is set to take effect on September 1, 2025.

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